Electric switch.



H. 6. GRANT. ELECTRIC SWITCH. APPLIUATION FILED JULY 9, 1908.

961,693,, Patented June 14, 1910.

I j if i I I l I WITNESSES nvmvroe fir FATE

HARRY c. GRANT, or BAYGNNE,

NEVI' JERSEY.

ELECTRIC SWITCH.

To all whom it may concern:

Be it known that l, HARRY C. GRANT, a citizen of the-United States, and a resident of Bayonne, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Electric Switches, of which. the "following is a specification.

My invention relates to electric switches of the snap type, and the object of my invention is to provide a simple switch which may be made at a low cost.

Referring to the drawings WlliCll'fOlHl :1, part of this specification, Figure 1, is a cross sectional view of my improved switch. Fig.

, 2, is an inverted plan view on line XX of Fig.- 1;' and Fig. 3, is a perspective view of the elements which cont act with the spring in the switch, one of which is a conductor of electricity and the other of which is made of insulating material.

A, indicates the outer casing in which is held an inner casing B, which incloses all of the switch members.

0, indicates a handle by means of which the switch is manually operated, and is provided with a shank C which carries an in sulziting washer l), a switch member E which is :i'conductor, and a switch member 1* which is a nonconductor of electricity, and a nut G, which servesto clamp the siiid parts together. The members E and F are formed exactly alike and may be punched by the same die, and are connected together by screws H and ll as illustrated in Fig. 2, in cross relation, the holes /z-7zr/1.---h be ing all formed at the same. distance from the center of the member, so that they will. register with each other, as will readily he understood.

Connected. to the casi inent l, which is insulated tron: .he said cnsing by :1. strip of in rioting material 5, which is of greater length and width than. that or said element 1, and is provided. with e slot 5" into which a. projectiim I is insert ed to prevent element 1' from swiveling on element J, and directly under this point a slot B is provided in c: sing i3 to prevent said projection from contacting with the l3 :1 spring ele Specification of Letters Patent.

Application filed Jul 's, 1902.

l l l Pzttenteei June i4, 191%. Serial No. 412,640.

ing B, which would cruise 2. short circuit in the switch. The sprin element 1 and insuletting element J are he id to the casing B by a rivet K which passes through an insuleting nipple L, betweenthe flange of which and the element l, a. conducting wire M is clamped in electrical contact with said element 1, but is insulated from the casing B. A conductor N, is connected to the casing B and in electrical. contact therewith, by a screw and nut O and. 0 respectively.

P indicates a porcelain base piece which is held to casing A by a screw l? shown and is provided with a hole in its center through which the conducting wires pass, and this base piece serves a base for the casing 13.

The switch operates as fol-1ows:Assnming the currentto be entering through wire M to switch member I, in the position shown in drawings, it will iiow thri'iugh the rotati'og switch member E to shank C and thence to the casing 13 which serves its a conductor, to screw 0 and return by wire N. By turning the switch member C on its axis one eighth of a turn, thetwo adjacent corners oi? switch n'ienibers E and F will be in contact with the spring surface of element I, which will be forced heel: during the turning movement or the element C and will be in position to exert its stored energy to force the members E and the rest of the to complete a quarter turn of eieinent C, end the circuit will be instantly broken hetween spring; I and element E, it will be noticed that in breaking the circuit, the corner of elcinei'it precticsllv lifted proper nuinner to bi- The member G may ec io to infihifi o cult.

claim ters li' tent J m electric switch zpi' sw' h member (mo. li'lSiLtlflii-til e pair of l. n smell. and

.a. conductor and the other a non-conductor of electricity, York and State of New York this 1st day of connected together and alike in form, and July A. D. 1908.

' means for rotating said last named members said means being a conductor of electricity HARRY GRANT and connected in circuit with said spring Witnesses:

member and said casing. v FRANK M. ASHLEi',

Signed at New York in the county of New A. T. SCHARPS. 

